JPH0673989U - Speaker grill for car stereo - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a car stereo speaker grill that can be accurately and easily assembled with a car stereo speaker without rattling due to traveling vibration. In a speaker grill for a car stereo, which is fitted into a speaker mounting hole provided on a mounting board from the front side to hold an outer peripheral portion 2 in contact with a hole edge of the speaker mounting hole, The outer shape of the speaker mounting hole is circular so that it can be rotated along the edge of the speaker mounting hole, and a plurality of short leg portions 4 each having an outward engaging claw 3 stretched at its tip are disposed on the rear surface of the speaker mounting hole. At least one end of the inner surface 5 thereof is formed as an inclined surface in the circumferential direction, and a hemispherical small projection 6 is provided on the inner surface of the intermediate portion of each engaging claw 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a car stereo speaker grill that allows a car stereo speaker to be easily and accurately assembled into a speaker mounting hole provided on a mounting board.

[0002]

[Prior art]

 In the conventional car stereo speaker, the speaker mounting holes on the mounting board are fitted from the front side so that the back surface of the outer peripheral part of the speaker grill comes into contact with the front surface of the mounting board, and then fixed with screws that are screwed into the boss. However, there is a problem that it is necessary to fix at many places to fix it so that it does not rattle due to running vibration, and it takes time to fix the screws.

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to solve the above problems and to prevent rattling due to traveling vibration even if the number of full-scale fixing points such as screwing and crushing welding of bosses is reduced. An object of the present invention is to provide a speaker grill for car stereos that can easily and accurately install a speaker for car stereos that does not exist.

[0004]

[Means for Solving the Problems]

 The speaker grill for a car stereo according to the present invention, which has solved the above-mentioned problems, is fitted into the speaker mounting hole provided on the mounting board from the front side so that the outer peripheral portion abuts the hole edge of the speaker mounting hole. In the car stereo speaker grill that is designed to be held, the outer shape of the speaker grill body is made circular so that it can be rotated along the edge of the speaker mounting hole, and an outward engaging claw is stretched at the tip on its back surface. A plurality of short legs are provided, and at least one end of the inner surface of each engaging claw is formed as a slanted surface in the circumferential direction, and a small hemispherical protrusion is provided on the inner surface of the middle part of each engaging claw. It is characterized by having been set.

[0005]

[Action]

 In such a car stereo speaker grill, the speaker mounting holes of the mounting board are circular, and a plurality of recesses for fitting the pawls through which the engaging pawls can pass are provided at the edges of the mounting holes. If a small hole for engagement is provided on the back surface of the mounting board, and the speaker grill body according to the present invention is fitted into the speaker mounting hole from the front side and the speaker grill main body is rotated, the speaker grill main body is attached to each member. The inner surface of the dowel is closely contacted with the back surface of the mounting board, and the hemispherical small projections provided in the middle part of the inner surface of the engaging pawl are engaged and held in the engaging small holes on the back surface of the mounting board. As a result, the speaker grill body can be easily and accurately held on the mounting board without rattling, thus reducing the number of full-scale fixing points such as screwing and crushing welding of the boss. Also caste Oh speaker is that rattle even when subjected to traveling vibration occurs not name.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. When the speaker body for a car stereo is fitted into the circular speaker mounting hole 11 provided on the mounting board 10 from the front side, the back surface of the outer peripheral portion 2 contacts the outer peripheral surface of the speaker mounting hole 11. In the speaker grill main body which is in contact with the speaker mounting hole 11, two recessed notches 12 for fitting the claws are provided at opposite positions at the edge of the speaker mounting hole 11, and between the recessed notches 12 and 12. A small engaging hole 13 is provided on the outer peripheral back surface of the speaker mounting hole 11 of the mounting board 10. Then, on the back surface of the outer peripheral portion 2 of the speaker grill main body 1, there is provided a short leg portion 4 having an outward engaging pawl 3 having a size passing through the recessed portion 12 at its tip. The inner surface 5 of each of the engaging claws 3 is formed as an inclined surface in the circumferential direction inclining from the downward end 5b to the upward end 5a, or only one end of the inner surface 5 is formed as an inclined surface. A small hemispherical projection 6 is provided in the middle of the inner surface 5. Reference numerals 7 and 7 in the drawing denote guide legs arranged between the short leg portions 4 and 4 on the back side of the outer peripheral portion 2 of the speaker grill body 1.

In such a structure, the speaker grill main body 1 having a circular outer shape is fitted from the front side into the circular speaker mounting hole 12 of the mounting board 10 with the engaging claws 3 corresponding to the recessed portions 12. When the speaker grill body 1 is rotated toward the downward end 5b side of the inner surface 5 of the engaging claw 3, there is a sufficient gap between the downward end 5b and the mounting board 10, so that the short leg portion 4 and The guide legs 7 start to rotate smoothly while guiding the guide legs 7 to the edge of the speaker mounting hole 12, and the hemispherical small protrusions 6 provided in the middle portion of the inner surface 5 are in contact with the back surface of the mounting board 10 and the hemispherical small When the hemispherical small protrusion 6 reaches the engaging small hole 13 provided on the outer peripheral rear surface of the hole edge of the speaker mounting hole 11 of the mounting board 10, the small engaging protrusion 6 continues to rotate under the sliding assist of the protrusion 6. The hemispherical small projection 6 is engaged with the engaging small hole 13 by the elasticity of 3. To be done. When the hemispherical small projection 6 is engaged with the engaging small hole 13 in this manner, the ascending end 5a of the inner surface 5 comes into close contact with the back surface of the mounting board 10 due to the elasticity of the engaging claw 3. This is completed, and after that, if necessary, full-scale fixing such as screw fixing and crushing welding of the boss can be done at several places, and the assembly work can be performed very easily.

In the car stereo speaker assembled in this manner, the speaker grill body 1 fitted and rotated from the front side with respect to the speaker mounting hole 11 of the mounting board 10 has the short leg portion 4 from the tip. The upward end 5a side of the inner surface 5 of the engaging claw 3 stretched outward is brought into close contact with the back surface of the mounting board 10 by the elasticity of the engaging claw 3 and the edge of the speaker mounting hole 11 of the mounting board 10 Since the hemispherical small projection 6 provided on the inner surface 5 of the engaging claw 3 is engaged with the engaging small hole 13 provided on the outer peripheral back surface of the speaker grill 1, the speaker grill 1 is loosened with respect to the mounting board 10. Since the car stereo speaker is accurately maintained in a non-vibrating state, the car stereo speaker will not rattle or come off due to running vibration.

[0009]

[Effect of device]

 As is apparent from the above description, the present invention is a speaker for a car stereo that is fitted into the speaker mounting hole provided on the mounting board from the front side so that the outer peripheral portion is brought into contact with and held by the hole edge of the speaker mounting hole. In the grill, the outer shape of the speaker grill main body is formed into a circular shape that can be rotated along the hole edge of the speaker mounting hole, and a plurality of short leg portions having outward engaging claws stretched at the tip are provided on the back surface thereof. At least one end of the inner surface of each engaging claw is formed as an inclined surface in the circumferential direction, and a hemispherical small protrusion is provided on the inner surface of the middle part of each engaging claw to fix screws and other parts. Even if the number of fixing points is small, the speaker grill body can be accurately held by a simple operation with respect to the speaker mounting hole edge of the mounting board so that rattling due to traveling vibration does not occur. So Stop other can be reduced or eliminated full-scale fixed work, also, there is work on extremely convenient, such Runado many advantages since carried out even in a complete temporary stop state when performing the fixing operation. Therefore, the present invention has an extremely great practical value as a speaker grill for a car stereo that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a front view of a speaker mounting hole for mounting the speaker grill body of the present invention.

FIG. 4 is a sectional view showing a main part of a speaker grill body of the present invention fixed to a speaker mounting hole.

FIG. 5 is a side view showing another embodiment of the engaging pawl according to the present invention.

[Explanation of symbols]

 1 Speaker grill main body 2 Outer peripheral portion 3 Engaging claw 4 Short leg portion 5 Inner surface 6 Hemispherical small protrusion

Claims (1)

[Scope of utility model registration request] 1. A speaker grill for a car stereo in which a speaker mounting hole provided on a mounting board is fitted from the front side to hold an outer peripheral portion (2) in contact with a hole edge of the speaker mounting hole. The outer shape of the grill body (1) is circular so that it can be rotated along the edge of the speaker mounting hole, and a plurality of short leg parts (4) are provided on the rear surface of which the outward engaging claws (3) are stretched at the tip. Individually, each engaging claw (3) has its inner surface (5)
Speaker for a car stereo, characterized in that at least one end of each is formed on an inclined surface in the circumferential direction, and each engaging claw (3) is provided with a hemispherical small protrusion (6) on the inner surface of the middle part. grill.